Steam boiler



Dec. 27, 1927. 1,653,828

C. UEBELMESSER STEAM BOILER Filed Nov. 6', 1925 4 Sheets-Sheet 2 lNVENTORf C/L/HRL Es (/5551 zz-5515 7 ATTORNEY Dec. 27, 1927. 1,653,828

' C. UEBELMESSER STEAM BOILER Filed Nov. 6. 1925 4 Sheets-Sheet 3 INVENTOR. CH/{RL ES {/5611 555 6K ATTORNEY Dec. 2 7, 1192 7 1,653,828 C. LIEBELMESSER STEAM BOILER Filed Nov. 6, 1925 4 Sheets-Sheet 4 N V E N TO R 1 /l /R/ 5 (/FBEL 151551 ATTORNEY Patented flee. 27, E927.

lTEl) STATES CHARLES UEIBELMESSEB, OF NEW YORK, N. Y.

STEAM BOILER.

Application filed November 6, 1925. Serial No. 67,245

ile my improvements are applicable to the construction of steam boilers generally, they are especially adapted to steam generating apparatus for use in automobiles, and for analogous purposes, where a continuous, rapid sup 1y of live steam is a olesideratum,the invention consisting in the specific combination, arrangement and construction of the component parts and appurtenances of the boiler herein described and claimed; and distinctive features being the configuration and nesting of the boiler tubes and their adaptability to replacement; the means employed for reinforcing the walls of the generative tube chamber; compactness of structure; and other incidental advantages attained, all as hereinafter fully set forth.

In the accompanying drawings 1 illustrate a practical embodiment of the essential elements of my invention in a substantially cylindrical u right boiler of the character designated, though I do not restrict myself to the identical form and construction of component parts of the apparatus shown by way of exemplification, since changes may be made in minor details", and equivalent mechanical expedients resorted to with like re sults, and without departing from the spirit and intent of my invention in this respect.

With this understanding Fig. 1, represents a vertical section taken upon plane of line 11, Fig. 2;

' Fig. 2, is a horizontal section taken upon plane of line 2 2, Fig. 1;

Fig. 3, is a plan 0 the top of the boiler section, broken away in part to show interior construction Fig. 4, is a horizontal sectiontaken upon plane of line 4-4, Fig. 1.

The heater H, forming the lower portion )f the combustion chamber 0, may be of any suitable or desired type, said combustion chamber C, constituting the lower portion of the generative chamber G, in which, the feed water heating coil f, and generator tubes g, are located.

,The feed 'water heating coil f, is positioned against the inner side of the cylindrical wall I), of the generative chamber G, which also constitutes the inner wall of the boiler water space w, as will be seen by reference more particularly to Figs. 1 and 2, of the drawings, thus bracing and reinforcing said artition wall 12, against expansive strain an pressure incidental to steam generation. The upper end of the feed water heating coil 7, communicates with an inlet I pipe i, as shown in sectional detail on the left side of Fig. 1, the upper end of said inlet pipe 2', being connected with a water supply pipe 8. The lower end of the feed water heating coil 1, communicates with the annular hot water space w, formed between the wall I), of the generative chamber G, and the outer shell I), of the boiler, through the medium of the outlet duct is, as shown in sectional detail on the lower right side of Fig. 1, the level of hot water in said boiler space w, being prescribed by a drain stand pipe 2, shown. in elevation in the left ortion of Fig. 1. On the same side of said ig. 1, the inlet duct 6, to one of the lower horizontal generative tubes 9, is shown in sectional detail, it being understood that a like inlet duct e, is provided for each of the several horizontal generative tubes g, connect-f ing them with the boiler water space w. Each of sald generative tubes terminates in an outlet extension g, which projects into an exit stand pipe 7, extending through the drying chamber D, above the top plate 6*, of the generative chamber G, and the top plate 6 of the boiler, as illustrated in sectional detail on the upper right side of Fig. 1, of the drawings, each of saidexit stand pipes p, being formed, with an outlet p, openin into said drying chamber D.

To acilitate detachable connection between the outlet extension g, of each 'gen erative tube g, and its exit stand pipe p, said extension g, is formed with a welded head g fitting within its exit stand tube p, said head 9 being formed with a perforated cross end member which is also female screw. threaded for connection with a coupling screw bolt p As will be understood by reference to Fig.- 2, of the drawings, there are three generative tubes g, of serpentine shape, in each horizontal layer thereof, each tube being supported at one extremity by its inlet duct 6, and at its other extremity by its exit stand pipe 12, both heretofore referred to, the medial portions of each of said generative tubes g,-being supported by and on a rest plate 1', which is supported in turn on a suspender bolt 1", the u per portion of which is screw-threaded or engagement with a nut 6 integral with the to plate I), of the generative chamber G. T ere is an individual tray rest plate 1-, for each of the six layers of return bend serpentine generative tubes g, of which latter there are three in each layer, and each tray rest plate 0', 'is formed on its upper side with three pocketsor depressions 1*, each for the reception and support of the central bight or return convolution g of a serpentine generative tube g, wher it doubles upon itself, as shown in said Fig. 2. I

It will thus be seen in this connection, and considering Figs. 1 and 2, ofithe drawings conjointly, that the medial return bends g", of the generative tubes 9, are located, substantially, in the centre of the generative chamber G, where they are exposed to a maximum of heat incidental to the passage of the products of combustion from the combustion chamber C, through said generative chamber G, on their way to the outlet tubes b, interposed between and connected with the top plate 6, of the generative chamber G, and the top plate 6,, of the boiler, said outlet tubes [2, extending through the'drying chamber without comunication -therewith and'discharging the products of comtion into the horizontal flue b, from which "they are withdrawn through the vertical exit flue b, asindicated in Fig. 1, of the drawings in which figure only two of the outlet tubes 6, are shown as of full length, the others being broken away to more clearly show the stand pipes p, positioned in the drying chamber D.

It will be noted by referring to Fig. 2 that each generative tube 9 is of the same construction or configuration and consists of a pair of parallel irregularly shaped sinuous lengths or coils which are connected at one end by the return bend portion g", and that the distance from the inlet a to the return bend portion is greater than the distance from the return bend to the exit g, thus insuring a rapid flow of the steam from the highly heated return bends to the exit g. It will also be noted that the outlets and inlets are arranged at equally spaced intervals around the circumference of the boiler, and that the three pairs of outlets and inlets for the three coils which comprise each horizontal layer of elements are equally spaced about the boiler. It will be understood that the tubes 9' of each horizontal layer are similar in construction and arrangement and correspond with the showing "of Fig. 2 except that the outlets and inlets of each layer obviously are outof vertical alignment with the other layers, as a result of this, although every tube 9 is of the same shape and size. The coils and return bends are out of' vertical alignment, so that a tortuous passage for the furnace gases about the (30115 is provided and the coils of a lower horizontal series do not completely screen those above.

The steam is withdrawn from the latter through an outlet 6 in the top late 6', of the boiler, and thence conducted by a pipe 6 to the superheating coil S, located bebetween the combustion chamber C, and the generative chamber G, the form of said superheating coil S, being shown in detail more particularly in Fig. 4, of the drawings, 8, representin the inlet duct, and a, the outlet ductof said coil S.

By the form and arrangement of component parts of my steam generating appara tus I attain and combine compactness of structure with a high degree of efliciency, since the heat of the products of combustion is utilized to a maximum degree, while at the same time, am le provision is made for the replacement 0 parts, particularly the individual enerative tubes 9, with a minimum of disturbance or other parts of the apparatus. Furthermore, the positioning of the feed water heating coil 7, directly against the inner surface of the wall 7), of the generative chamber G, is a decided improvement in that it is not only thus practically out of the way, but also functions as a reinforcement of said partition wall I), as hereinbefore stated.

The drain stand pipe 2, is of importance in maintainin a water level of suficient height in the oiler space to, to insure the maintenance of a full supply of water 1n the generative tubes 9. B constructing the steam generating part 0 the boiler of a large number of relatively short inde endent tubes or elements a much more rapi steam generation and a much quicker separation of the steam from the water is secured than with constructions wherein a single length of pipe is coiled to provide several horizontallayers which form part of a single coil. In addition, if a tube should burn out the replacement of a relatively short len h of tubing obviously involves a much sma. er replacement expenditure.

What I claim as my invention and desire to secure by Letters Patent, is

1. In a steam boiler, asteam generating tube havin a pair of parallel sinuous coils connected y areturn bend and havmg an outlet and an inlet, said outlet and inlet being spaced from each other and from said return bend to provide three widely separated supporting points, the distance from said inlet to said return bend being eater than the distance from said bend to said outlet and the sinuous configuration of said coils being such that said tube may be placed in nested intervoluted spaced relationship with a similar tube.

2. In a steam boiler, a plurality of steam generative elements arranged in superposed horizontal layers, each of said layers consisting of a plurality of similar steam generating coils, each of said coils consisting of a" pair of parallel sinuous lengths connected b a return bend and said coils being arrange in intervoluted spaced relationship with the return bends thereof grouped in the central portion of the boiler.

3. In a steam boiler, a steam generator consisting of a plurality of similar tubes, each consisting of a pair of-parallel sinuous coils connected by a return bend and terminating in an outlet and an inlet, said tubes being arranged to form a plurality of horizontal layers each of said layers consisting of a plurality of said tubes arranged in intervoluted spaced relationship the outlets and inlets of each layer of tubes being equally spaced about the boiler adjacent to the inner wall thereof and the return bends of each layer being grouped in the central part of the boiler.

4. A steam boiler as set forth in claim 3 in which the outlets and inlets for all the J so that the coils and return bends of each horizontal layer are out of vertical alignment with t ose of the other horizontal layers.

5. A steam boiler of the type wherein a acterized by each separate tube being pror vided with a return bend located adjacent to the center of the boiler and a supporting device common to all of said tubes being provided with means to engage each return bend portion of each tube, and to hold the tubes of each horizontal layer in properly spaced relationship to those of-the adjacent layers.

CHARLES UEBELMESSER. 

